UVA13101 Tobby on Tree

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=4999 [PDF](https://uva.onlinejudge.org/external/131/p13101.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13101/41403fabb2ee376f2a97f12398d3ba5b9dbbb7a8.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13101/e51708e570c25bb230b2cc21794dfca5bc5d77a7.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13101/723ef1e6d573cf6972bd391e1407f465ba9e9640.png)